139564-83-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139564-83-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,5,6 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 139564-83:
(8*1)+(7*3)+(6*9)+(5*5)+(4*6)+(3*4)+(2*8)+(1*3)=163
163 % 10 = 3
So 139564-83-3 is a valid CAS Registry Number.
139564-83-3Relevant articles and documents
Derivatives of Thiazoles and Thiazolidines from Benzoylthioureas
Wobig, Dieter
, p. 415 - 417 (2007/10/02)
The thioureas 1a-c react with the derivatives of γ-bromocrotonic acid 2a and 2b to give the thiazoles 3a-f.Contrary to this, the treatment of 1d or 1e with 4 or 2a and 2b leads to the thiazolidines 5a and 5b or 6a-d, respectively. 3g can be synthesized by
